The author expands on this concept in his 2014 book (~7 years after the publication of this paper), Our Mathematical Universe: My Quest for the Ultimate Nature

The author expands on this concept in his 2014 book (~7 years after the publication of this paper), Our Mathematical Universe: My Quest for the Ultimate Nature of Reality. I've read it, and I would highly recommend it to my fellow HN'rs. I found his multiverse classification scheme [1] very compelling and something that finds its way into my worldview and a lot of my thinking. [1] https://en.wikipedia.org/wiki/Multiverse#Max_Tegmark.27s_four_levels https://en.wikipedia.org/wiki/Multiverse#Max_Tegmark.27s_fou...